lowden and a



M. J. LOWDEN AND A. A. FEHRENBACHER.

RIDDLE BOX GRAIN GUIDE.

APPLICAIION FILED AUG. 19. 19m.

1,317,802. I Patented Oct. 7,1919.

2 SHEETS-SHEET I.

Jnventors /%ms/Mu f [on 05m. 4/1 70 A fb/ifA/EMA [R may? THE COLUMBIA PLANnmzu-xwAsumu'rwi. n. C.

M. J. LOWDEN AND A. A. FEHRENBACHER.

RIDDLE BOX GRAIN GUIDE.

APPLICATION FILED AUG- 19, I918.

2 SHEETS-SHEET 2- 1,317,802. Patented Oct-L7, 1919. A

Jnvenhrs B5 Gttorneg.

-1|r muwmu I'LANUGRAI'II cm, WASHINGTGN, u. c.

ATE??? Fro.

MARSHALL J. LOWDEN AND ANTON A. FEHRENBAGHER, 0F LOWDEN, WASHINGTON.

RIDDLE-BOX GRAIN-GUIDE.

T o'aZZ whom it may concern Be it known that we, MAnsHALL J. LOW- DEN and 'fhNTON A. FEI-IREN AGHER, citizens of the United States, residing at Lowden, in the county of Walla Walla and State of Washington, have invented certain new and usefullmprovements in Riddle'- 'Box Grain- Guides, of which the following is a specification.

This invention relates to a new and useful improvement in riddle-box grain guides, and has for its object to provide a new and novel means to prevent grain from piling up on the low side of the riddle-box in the process of separation when on hilly ground.

That our invention may be better understood reference is had to the accompanying drawings, in Which Figure 1 is a partial side elevation showing the riddle box partly in section;

Fig. 2 is an end elevation of the riddle box showing the operating means, and

Fig. 3 is a plan view of the riddle-box showing the movable grain guides.

It will be here explained that Fig. 1 is merely an outline of a separator and is meant to show simply the relative location of the riddle-box and such parts as may effect its action.

In the drawings 1 represents the housing of a separator (or threshing machine) having the usual frame 2 and having wheels 3 to support the machine. Elevators 4; and 5 respectively have the usual conveyers 6 and 7 respectively, said conveyers being situated beneath the riddle box. Cylinder 8, represented by the dotted line, carries a sprocket wheel 9 attached to the shaft of said cylinder to communicate power to the riddle box which is accomplished in the following manner A chain belt 10, carried by the sprocket wheels 9 and 11 respectively, communicates power to the crank shaft 12 (the end only of which is shown) and this crank shaft, by means of the shaker arm 13 imparts a vibratory motion to the riddle box 14 which is hung to the frame 2 of the separator by means of hangers 15. V

The riddle-box 14 carries grain guides 16, the usual sieve 17, fingers 18, and as shown in the drawings an extension 19 on which we show our invention; it is to be understood however that our invention is equally ap- "licable ever the sieve, we will therefore rerer to the riddle box as a whale instead Specification of Letters Patent. 1 Patented Oct. 7, 1919.

Application filed August 19,1918. Serial No. 250,455.

distinguishing between the riddle-box and the extensions In the riddle-box are movable grain guides 20 shown attached to a plate 21, which holds the grain guides parallel, it being obvious however that other means may be usedfor.

.through the slot 24 (shown dotted) in the floor of the riddle-box. This flexible arm is hinged to one end of the lever arm 25 which is fulcrumed on a bracket 26 mounted on the housing 1 of the machine and which carries a second arm 27 hingeably attached thereto on its upper end; this second arm extends across or through the machine and has a rack 28 formed in one of its edges to engage a plate 29 suitably attached to the side of the machine, and a convenient handle 30.

Referring back to the flexible arm 23 it will be noted that one end thereof is pivotally attached at 31 to the riddle-box which has a vibratory motion and that the other end of the flexible arm is hingeably attached to the lever arm 25 which swings laterally from the machine therefore to harmonize the two motions we utilize a flexible arm which may be of any suitable material which has the required flexibility and stiffness and we place a bend 32 therein which adds to the flexibility of the arm.

A riddle-box is for the purpose of separating the grain from the chaff and is agitated in a manner to work the grain through the sieve and to work the lighter parts over the sieve thus accomplishing the separation.

On level ground the mass of grain and chaff, etc., is distributed evenly over the sieve, but when, as frequently occurs, the separator is operating on uneven ground, the mass piles up on the low side of the riddle-box and unless great care is exercised much of the grain is lost by spilling over the sides and, it is obvious that with the mass piled up to a greater than normal depth separation cannot take place effectually; therefore to overcome this defect movable grain guides 20 are provided arranged in such a manner that they may be changed a normal parallel to the sides position to an oblique position as shown by the dotted lines in Fig. 3, with the forward end of the outer guide resting against the low side of the riddle-box which forms a dam and throws the rear end of the guides toward the high side; thus with the rear end high, the front of the outer guide damming the mass, and the riddle-box vibrating, the mass is delivered away from the low side and thereby prevents spilling and thus saves grain, and also gives a more equal distribution to the mass over the sieve.

Having thus described our invention we claim 1. The combination, with a riddle-box, of a plate pivoted to the riddle-box, grain guides attached to the plate, and a means for operating said plate in a horizontal plane about the pivot. Y

Copies or this patent may be obtained for plate, and a: means for moving said plate in a horizontal plane about the pivot.

3. Thezcombination, with a riddle-box, of grain guides pivotally attached to the forward part of the riddle-box, a flexible arm pivotally attached to the plate, a lever arm hingeably attached to the arm, a second arm hingeably attached to the lever arm, a rack in one edge of said last mentioned arm, a plate to register with said rack, and a handle on said last mentioned arm, substantially as described.

In testimony whereof we aiiix our signatures.

r MARSHALL J. LOWDEN.

ANTON A. FEHRENBACHER.

five cents each, by addressing the icomniissioner of Patents, Washington, D. 0. 

